Sen. Bob Corker, R-Tenn., is working with House lawmakers on potentially adding North Korea sanctions to legislation imposing new sanctions on Iran and Russia. (Photo By Tom Williams/CQ Roll Call)

By JOE WILLIAMS and REMA RAHMAN, Roll Call

House and Senate lawmakers have run into timing issues in trying to add language imposing new sanctions on North Korea to a bill already passed by the Senate that would place new sanctions on Iran and Russia.

President-elect Donald Trump’s transition team early Tuesday announced that he would nominate ExxonMobil CEO Rex Tillerson to serve as his secretary of State.

“His tenacity, broad experience and deep understanding of geopolitics make him an excellent choice for Secretary of State,” Trump said in the announcement. “He will promote regional stability and focus on the core national security interests of the United States.”